Demo has been the go-to for heroic progress indeed and pulling very sick numbers.
Agree with the UVLS nerf, just too strong for demo, and possibly affliction too. Definitely too strong for aff if you can roll a 10-stack Wush + meta crits across multiple targets (Hi Protectors/Garrosh). However, I do not agree with the imp nerf, makes no sense as the UVLS nerf effectively caps imp numbers and will push people towards SoO trinkets.
Affliction Haunt nerf kind of surprised me. Good single target but rogues and BM hunters up our ass, multi-target has a higher skill cap and you aren't exactly haunting the shit out of everything.
Very sad to see Demo hit so hard - highest skill cap of all the specs imo and now it won't be rewarded. So happy I managed to pick up BBoY last night now...